Home / 1,038,006,411.40-1,557,009,617.10-310,995,123.40

Finding the Fourth Proportional to 1,038,006,411.40, 1,557,009,617.10 and 310,995,123.40

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Solution

The fourth proportional to 1,038,006,411.40, 1,557,009,617.10 and 310,995,123.40 is: 466,492,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,006,411.40 : 1,557,009,617.10 = 310,995,123.40 : x
  2. Step 2: Convert to fraction form
    1,038,006,411.40/1,557,009,617.10 = 310,995,123.40/x
  3. Step 3: Cross multiply
    1,038,006,411.40x = 1,557,009,617.10 × 310,995,123.40
  4. Step 4: Simplify right side
    1,038,006,411.40x = 484,222,398,005,001,152
  5. Step 5: Solve for x
    x = 484,222,398,005,001,152/1,038,006,411.40
  6. Step 6: Final answer
    x = 466,492,685.10

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Half scale
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Double scale
Find fourth proportional to 1,038,006,412.40, 1,557,009,618.60 and 310,995,124.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.